The first process in breaking down glucose is
A)the Krebs cycle.
B)glycolysis.
C)the electron transport system.
D)fermentation.

Question

Quizplus · Accepted Answer

The first process in breaking down glucose is glycolysis. In glycolysis, glucose is converted into two molecules of pyruvate. This process occurs in the cytoplasm and does not require oxygen. It is followed by the Krebs cycle and the electron transport system, which are both aerobic processes that occur in the mitochondria. Fermentation is a pathway for glucose breakdown that occurs in the absence of oxygen, but it is not the first process in breaking down glucose.

The First Process in Breaking Down Glucose Is